Abstract

Wave-field migration is an attractive tool for imaging complex geological structures. It takes intrinsically into account the multi-pathing and can handle velocity models with strong lateral variations. The accuracy of this method relies on the quality of the used wave-field propagation method. Among many methods, the GSP propagator presents several advantages. We first present an optimization of this method. Then we present migration results using the regular and optimized GSP on synthetic and real data sets. These results show some limitations of the GSP propagator in presence of strong lateral velocity variations.

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